The 4 Port Aluminum USB Hub from Satechi has a slim design to reduce desktop clutter while still offering an additional 4 high speed USB 2.0 ports. The 4 Port USB Hub connects to an available USB port, of a computer for example, to turn 1 port into 4. This convenience allows for multiple connections of various USB devices to the computer which is very beneficial as the amount of USB compatible electronic devices continues to grow. The 4 Port USB Hub is a plug and play device that does not require the installation of any software to use. It's small enough to throw in a bag or pocket to easily take from place to place and because it's USB 2.0 compliant with a shielded cable it will have safe and efficient transfer rates up to 480 Mbps. The 4 Port Hub is compatible with Windows 98SE/ME/2000/XP/Vista/7, Mac OS 9.1 and higher, Linux 2.4 and above.